Answer:
Explanation:
Since the wires attract each other , the direction of current will be same in both the wires .
Let I be current in wire which is along x - axis
force of attraction per unit length between the two current carrying wire is given by
[tex]\frac{\mu_0}{4\pi}[/tex] x [tex]\frac{2 I_1\times I_2}{d}[/tex]
where I₁ and I₂ are currents in the wires and d is distance between the two
Putting the given values
285 x 10⁻⁶ = 10⁻⁷ x [tex]\frac{2\times25.5\times I_2}{.3}[/tex]
I₂ = 16.76 A
Current in the wire along x axis is 16.76 A
To find point where magnetic field is zero due the these wires
The point will lie between the two wires as current is in the same direction.
Let at y = y , the neutral point lies
k 2 x [tex]\frac{16.76}{y}[/tex] = k 2 x [tex]\frac{25.5}{.3-y}[/tex]
25.5y = 16.76 x .3 - 16.76y
42.26 y = 5.028
y = .119
= .12 m
